{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "578231820",
    "entityType": "User",
    "nonce": "0x9354a5f126bf414c8173f7911f0c0faaa35019f5f76c052ba598f5f4feb9ddec",
    "signature": "0xe2d0119c32fda484674df1fa8220250748cc683803b7fa6c86a49fd0c80f79a559fde313809b3c1f1cb6f1d30ea04af902acebcd1afc2d0efbe07c794a3a14721c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}