{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x85991641af8c3a15c0c53d01c85d92526b7b2e4725e6095c290bd6b355bea5ab",
    "signature": "0x5e25116b0f3cfd622a1c17166c84efa06a026f4c56d06bbd7732a10585b4059856e410d4fe7cc585d1f96780457238058bd41d168902a3f11acdf2996ab5fc6f1c",
    "signer": "0xb4276582E3cE1F3FC84AA50A7969dED8708bbf82",
    "userId": "988519573"
  }
}