{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xfda0a78a1891bf04ff4f4750aba8d162061fa985042ec2328378f12443cd5094",
    "signature": "0xe5e9cb2097c95394d3e924c059469b92aa63239b7a4939e333d91b8da33904063ce8b4fafce51c2928830c289d378c1ce97b3e786a4e44f50b6061916bef05a61b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}