{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "972435607",
    "entityType": "User",
    "nonce": "0x56a700c45392d5544a39775a05bd3882b7ddc8bfd24aa642ba5d891a43c80248",
    "signature": "0xd5b2cc6c7d0c3c775dce82d52682e1bc87accdc717672aef218c84d45957d12131dd53ade9e6512d14040308215578486c68222206102d047484b22878d454a61c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}