{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "196831756",
    "entityType": "User",
    "nonce": "0x3d2b56c82a393e8418a139d54af25b8173d4370adb41585331d8e420030550bd",
    "signature": "0xa5c246b7b9a28cde75eacdf87938c70f6d81e8ecf4084947e0ab77ddbf2f0eeb3e56b98dbcea4e328ec28cc2e99645937dce74f5b23d03f66259b4ddf96a00561c",
    "signer": "0xb3ec8D53b350D3Fae74A06a6023Fa66171B67E2c",
    "userId": "695620563"
  }
}