{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x58c9c51474c81dad8bb9189e6a299a1752cc606a6d83fa93cc44838f363ae564",
    "signature": "0xa37f7d0a0e62e8c97068c1a3ea911612cfcec8886972d09f9f4f678032d1250f008c4cfdaa17ebe7f178220a3ad381ce3588807974b9f007f191aa9ab74508e91b",
    "signer": "0x72F6eB99cf57402409D7F308bf83bC296fd5871D",
    "userId": "484468414"
  }
}