{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf62718ae325e5dc9a44066837336887a39796c8f939a9717e56666c365bf7b6c",
    "signature": "0x69704d57e21bfb3950e09c4eb3912c9f6debd40cca9f5a54d8c4e31ba39158ce654460f0468b372d907cdd09771613d7548c5f34e668924609a14d4aca1800ca1b",
    "signer": "0x57a364E2b3F1b8155Fa3e86D475d61F9ECA29b31",
    "userId": "803141188"
  }
}