{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x173e96b598acf9cc2af871f46ee414c44d95e1b2738be6ac4a8f16f82420f578",
    "signature": "0x10e49ab258dd05f5376c040540526f5b51dd4c9392f498fa92fd9ea377d7be0a7108570a889a8ec7babe90fe6e10329d542b95ae6124d777858ccf4e54f09a671c",
    "signer": "0x1b3E9Ea15dF71Ced48bA8E493c9BBBcBFa25823a",
    "userId": "913385866"
  }
}