{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c00bfd2b94b2380f371827b485842af0e3eafbd4fe8f42f64f1f7e94fd1f980",
    "signature": "0xaf974956cf7a2b688854f423c28bab449f4e492560d6e86ce247f7643e4b6abe2daab23a7157bb0fb1d55d17bcdd9bd41fe16215f2963b97a9ed6a872f85a22a1c",
    "signer": "0x0273608e88b9354159FF4810614D9bF60f72Ce45",
    "userId": "117397398"
  }
}