{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9b60a2ba819ad97bf15fdf08ac368e8f8b2427abee0ae7dc8932e5e86549a2d6",
    "signature": "0xba2b3ea27746b67cd13ce9dd557f44eb4925ffb8f887dfb9baab888a7cbe5d51233b1f0a1314d882e2c6c212bb912cecca92c4ab7fc4a6695448e03b7516bc241c",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}