{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a69b884a1d2dbe13fabd6bbb4e9eef10b2391579234ea6b0b96620c8eb93e96",
    "signature": "0xeec2950d05d13299d2aab48a1f922991987603b8881303ef015240073312debc588171a7d094192a7c7e3e8f26bf98d8c976f38ca7c8ae7caceb1f1f8604202f1b",
    "signer": "0xFBEf70FeDeEF5e9cA0CD581ED29cF04Bcf91BBF2",
    "userId": "478820287"
  }
}