{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcac50eb32649cbc4739e148933d620c5b84b2fdaa6429f68587ccfcd3b42e8d7",
    "signature": "0xbd15625a96d6b4cb32a9ad65ae6b50acdb293274cc0469d318d899fd04c723f32d916f3b925844e1f18afc3f52f8c184562c957b44399a67f1c6d61dd5016cc31b",
    "signer": "0x9976A5bDB93F69653188778fe013ed45ca0c2Ab1",
    "userId": "85051708"
  }
}