{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216807",
    "entityType": "User",
    "nonce": "0xfb8a9bd400c8ea121475605b76515beeecdc1dbaeaff533d379c7153843930fb",
    "signature": "0xc35e92c2e6e38390b6a9f7ae4744e9fd6f579ff4cc691384143d0221a0d8e78800366e43c8be2605d5775ce5b2a72881ac208233f26dcbf28cc37a34b0c7eab11c",
    "signer": "0xe74EA561439c78F34f4928Eb44ee8Bc5d67c3d45",
    "userId": "781858883"
  }
}