{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x13114d71e2c79dd52eebd8dce63918c9b65f53e7b80a389933c395a05b197960",
    "signature": "0x11317f36c914670e26701e363451ff73442b3b57767a24cb0d7787793abf5c9803df771e5ea7cdb73ae51e0048ca0955bd56f4f7954b92f734f1b9717dd7426c1b",
    "signer": "0xAd948EEedA4AB2d06bF3150Daf2D25De733e7Cd5",
    "userId": "175201368"
  }
}