{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863286534",
    "entityType": "User",
    "nonce": "0xa8f56bd9a4bc624dc23ef4ffa692ba047e88f1fb6d1751a846a4d383459a0bba",
    "signature": "0x5e247d1779a8c944899ddbc22b3aca09c46eec1e4b4109243405e72aec78a828193ed481cd8e4c82e041a8a82df0ae0ef56d95ee6e39a7e7299cc333fe458f141c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}