{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x471a0502902f41001958a40a88cbfd4e17a252a0cb5b08f6abaef5a7b9f72d7e",
    "signature": "0xe616e485ac2e07753f6b2c015e2da24f34bc38cdfb2db0c5e70b0110e27a27f8280cc8c1fba95cbd3080c4b54ae8971e69504813de8712b9fcf598e5949d57921c",
    "signer": "0x7EEebab641A35707b8dE5A7d40a4E283F2ea25D7",
    "userId": "189194486"
  }
}