{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x71f97881f6b3df0a2a79988060bf373faca7f97541a57eef6acac3b21790b453",
    "signature": "0x2f2f6871be87f91d39c34674d2e81b3b11f467ac5070bda962b280e71d146c574328980f3bd11ba70cf0374ff6ce6aff68982d852d49245003475e588df77c4d1b",
    "signer": "0xAf58252A9b1dC690e4AB259b9F5B1b7822764a64",
    "userId": "866728917"
  }
}