{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617072743",
    "entityType": "User",
    "nonce": "0x80467a974002227e3058bf95d25378940fb1d0394d557ae74762a9e1f68d9360",
    "signature": "0xd87e78c14e2cee9f857bd2398d2a227fb79e040c4b3168a5fe2dd19512cf1a1b7c68235f085c24ac510405d706d9f9307513e468a7757617f8a9b7177db22f3c1b",
    "signer": "0x75eA2a1dcFE3beE2Fe075b2603B8DEBeE3C59c88",
    "userId": "785302566"
  }
}