{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "289632107",
    "entityType": "User",
    "nonce": "0x3cd3046e50fecbe79a1dd81a5021054ad8b462e7afebfd1f891e07c3827f180c",
    "signature": "0xe747a95e7db347e96f48d693b769c77b681a7ec9e06f728f6004d903be4fdb0c721fe5c26a0bf925d98a7bd42603c256989d2e696a273d3c5705a14797bdf03f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}