{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "855728608",
    "entityType": "User",
    "nonce": "0x85b2b26cbb9d35ef307b5ac67b691b7b71c54775493d9d497c216c16aa99db60",
    "signature": "0xa77384ea748b9a0077d0b3794d73859b1d803f0e1dce9db7bd10db3cff78149d6df31ba8209c1acd8a4328fb9afe72f7dc9df6b358eed7df3df079b325d611591b",
    "signer": "0xE4EF593fb5D21ecF6B00BbBB006Eb9725F5F7a5A",
    "userId": "852971520"
  }
}