{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1640466",
    "entityType": "User",
    "nonce": "0x5755ad0ffc8a0da544f118dc288ce09fce60fadafdf9546021a7b12f47483aa2",
    "signature": "0x2b48868372b32cda7ad316e1e100ade33b170ea346ea82f27a00d4218be8aad12faf0a9fdc3093b417a649beb94185be985b710e97a8b580aa7efce5805e3db51c",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}