{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748846998",
    "entityType": "User",
    "nonce": "0x3246abac8b1cd5b88324b42b8d765b7fb30235cfe961b7d5ced588695e08bf40",
    "signature": "0x27c52c54b6ec3d57c3831400decdd386c25cc9e948714a87e5690cf5bb9242b227a8a77c56a78d8d1d082bbd35b34cc62c9af5b531106186fac41eed8e493a9d1b",
    "signer": "0x3504A096a184AdFd1ed71f0281661a5d34a1f2A6",
    "userId": "720251199"
  }
}