{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x42f9d1b85c5d7527e54b0b917bd7224545551d23f980c8901d4fa02922b0c1c5",
    "signature": "0x2a8bc8e8c769f54ed1ae08206b80cfe1d36d7e64ae21eec536ddc1c9595fcad11b1f0d78d57ae021687e918f4b23048af3805e68f7e4e11f4e0be54bc22317e01b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}