{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xecef9ae4b2b2ec1bd4c404114ba95ab4c46f5eb876a34f402233b136cf0e2292",
    "signature": "0x65e9c19cab1409f6dfd021f15a3aea2ffb6af7ca8b81520b24cb5ba1e14a74310d91b26dc77faa221b1e41384dec479e0765f64bece858346b704591b95dea4e1c",
    "signer": "0x70010B807d0a8025beb2760e9C7e0f599a7dcE01",
    "userId": "371148878"
  }
}