{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64441",
    "entityType": "User",
    "nonce": "0x4b515fa27a4230b67c5dd1be5bdb650988d4e0a17ac03077a9142476f583f7b8",
    "signature": "0xf198dd6fbf4e5f0f77dd612df4b7baa0143e86dab3dc927906f7d69f12a36b3f3ec6d4711a6baad4fe4fd24c4a733c33ad92e4a7bfbcc9619f12337fdd3ce6c71b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}