{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf1269f0dff26a9595396ba463e70b85b8f415c2fa7f57c12ac780f8b743b199c",
    "signature": "0xde210cd371396b538cf1e74d03c5fd1bcb6806fa7736b66add25e9c900ef19421f8d5dabd89ae6723b06d335e3e086469463c47801b5ca0499265edc3af30d0f1c",
    "signer": "0x825dd37a722dD88E702CAB18bBF6e5cE157209A0",
    "userId": "551219339"
  }
}