{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x115f157087b2ec4a995eab9e56b204bd45b994499fccc22f1932ff89bf09aa5b",
    "signature": "0x0c65e56e88fa5b170dc5d45c7c43e1a8c3f4765f02bf1d514508682359b2452579d9a4400ba7bd437a5d4adfcd4531a206993048266d6233c2473d90f70f2a511b",
    "signer": "0x9b7919A3bF612DD15b7230ff25b506B544866afC",
    "userId": "409504458"
  }
}