{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcff108778478dc2136e77f1bbfebfeafab042c16103b6214f57173d4a9cdd31c",
    "signature": "0xa5e90a3de25857e9a9fa90a8e6880e1aab51ef518df53be41eea82e5adc74ea7176a3d2b6171d30adb235ccda3141daf655e10d6867f097983d426fd661abc961b",
    "signer": "0x9b4847489D5c9512cC64E671001EC3cd21722170",
    "userId": "508846613"
  }
}