{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8797603bcda8cb978933c1848cae3465a4bba72dae69ea908f937ecdb7dc0546",
    "signature": "0x91836bab9314475e7db20c08d42fe3335c512ef803f48bd15923710f19fbb4bd74529fd7d82c0c6e39ec5d5906a99f0360f5dfa04a3606399087e2a4cbdce1aa1b",
    "signer": "0x4C9dBB58CF3eEfc9aFd6Ce3Da6F0b6A12C55b6eF",
    "userId": "745634654"
  }
}