{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9adc2d5caf17462da61df3d0387d34156666a10c3102664abcf4802466983061",
    "signature": "0xd458bd9d24ad0c2ba2d5ed1fc456e72e72d27980aa5bff81e7fed2ac2d8c0a1b0e7058d15d03d84754cf6be294e8ece08e3de98b84f031e30b864b2e2aaf12821c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}