{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa29bc3713badba8e2cb98c4d0aad16513c980976f6b4153ca700f5cb547f3d91",
    "signature": "0x4f16e08e272e85a72f7ed088b4694f6715f93d1535de10efb2060b927db693a306866e2a74bf99ce718f21a4ee7f21cfcf291cdbf16be3fbea746114841c0c321c",
    "signer": "0xF614A740B16Db70579d58A8789709C4C720BC216",
    "userId": "984484669"
  }
}