{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "455179560",
    "entityType": "User",
    "nonce": "0x528353af35e77fe29e41a7aa7df3667036757cd067bfbb103b9f6b44ef0446b6",
    "signature": "0xb0f0f76b02737ab661fd2162d8fca2a6c77b34ee1756746fc19fb5490a41ed1e2603f9f73082381d4faa02933ea7f5076288ec643b5274c253f58d83591c82d11c",
    "signer": "0x57D64A47c0B6C0789D9565B3D90270Aea276eB11",
    "userId": "199258"
  }
}