{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x61adc5dc689a02d0492dca52f90318be30a736307414f7c119c2fa2fd9931959",
    "signature": "0x9fc303837ece3db016d82d495d09610589d45088f3cb11a7f4fd3d8a5b3cb1706831cf901e12aa34b2aff1982e85af87e33ba28e452629c6a9c083563fbe1af71b",
    "signer": "0xb001DCb64Bf57b3EcC76C4Fe5AbfE2a8B084D6ba",
    "userId": "641557420"
  }
}