{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x1f658e76196df47a719a8679deca943d6aa0f5b361b092e7a59462ff0fa0d530",
    "signature": "0xbd0de3b5ef3a2fbd7b9086206d9ea5b3e46dd4d9f45dfa70ae08f53845eba1ba08c1aff2544ff5f8eee160bddf7f38245928f6156fa127a942d241395252913d1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}