{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "452313459",
    "entityType": "User",
    "nonce": "0x5ec0909b4a4ee76f0dbe2152447911eadfc574c3a92a93b9f9d5c675174a93a0",
    "signature": "0x8396cb21e5adbf48d58dd062cb5d3dc9c2956615cf6e53f8fac5920e40e428d9540f75d7095adf9261d7423c88d8632cbcc1b4e46922107457c3785a854cdf621b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}