{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "872905959",
    "entityType": "User",
    "nonce": "0xb5ba6acd90ca31cb3b0c1b4d154888730a7a9a54027fdac24efc950453ebd742",
    "signature": "0xea5399c96a6c818dcb5aa3242643e0e70eedbfe6cf8914eb688db59379798b94768445260f68ad8d467eeb123839edc1972889856cdb6c82205ed5d840fefb961c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}