{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "437606",
    "entityType": "User",
    "nonce": "0xb358f8c8e80d9144982a80d972ce8d6797450422d107cbc09736295a9ada5691",
    "signature": "0x989038c679e92dee3bc63c4d32c740c1c480153b4ad9ccd7d92a8be8c73b977408334ac947e286cd78485b1131ff2d374cf8f198a9db203c4a6ca0b33d833e1c1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}