{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1211",
    "entityType": "User",
    "nonce": "0xdecc46d46bda90d1ca253e0c86251740a547932a69cf72d2e3757a684c8f33cf",
    "signature": "0xaf6bf63c7580b3052ac0f6c253141de316a35d0c85edc782ca78c0a58bae142a5667834a5724a71e00faaf5be07a16f9b4308e09673f7a7f0d1ec9f4964e31821c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}