{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870",
    "entityType": "User",
    "nonce": "0xaca240f1b04dcad0ccd6c3ab0f0f2e5dc228dbe27b401cafa6088081fe4053fa",
    "signature": "0x4654ffff96e3aa874db86d4d3dd18f7dd394cca45ac08c4614dbe2b1e29b283f1e9e4a040b3807eecceec1f74947aed3181dc229f3a669f836cbf5d66ad6b6151b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}