{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1a0219d25f5c4c8756e8193348910908874fd094672664511c01fcde2b33aae2",
    "signature": "0x4f4349cef7f2f9d682d8263cc7da1414649638354fbc5f2f2c239bd276f6b0c0251be85120138f9fa7aff7c80257856a94f87a1d791a5e5ad1c8c1bce2dec3e41c",
    "signer": "0x50Fa68E2236737fa15f471F72A9AD1Ea99870D8c",
    "userId": "336906"
  }
}