{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122774",
    "entityType": "User",
    "nonce": "0x51ef16cb983457d74148196378ad76e1d6406f18058698cde6cc24b6b53a8fe2",
    "signature": "0xdd04a0c730e56173131a61697620824edc3da3563a6429ad919e161ea8680f49428f4a044669fc6f263dc4585c0795af14f4b716585c30e1ca86497ce4fedbd31c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}