message: add tags type
diff: "properties": {
  "tags": {
  "type": "object",
  + "additionalProperties": {
  + "type": "string"
  + },
  "description": "tags to be updated"
  },
  "properties": {
  "properties": {
  "tags": {
  "type": "object",
  + "additionalProperties": {
  + "type": "string"
  + },
  "description": "tags to be updated"
  },
  "properties": {
  "properties": {
  "tags": {
  "type": "object",
  + "additionalProperties": {
  + "type": "string"
  + },
  "description": "tags to be updated"
  },
  "properties": {
  "properties": {
  "tags": {
  "type": "object",
  + "additionalProperties": {
  + "type": "string"
  + },
  "description": "tags to be updated"
  },
  "properties": {
  "properties": {
  "tags": {
  "type": "object",
  + "additionalProperties": {
  + "type": "string"
  + },
  "description": "tags to be updated"
  },
  "properties": {
  