{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb00e49829a09f98ab69ecfb1eb5843f16b9b7f30845235900e1d57d373a41201",
    "signature": "0x55ce34a5b6fa7fae7cba3faf0794e360e408414e5cef19a6cd0380e2609410e95e4c3ea1fa5a12563a7594a93c20ce8da0b5b7ee537134061a17cce12705cfad1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}