{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199809170",
    "entityType": "User",
    "nonce": "0x70601da4d7ec177c36161ada391b9dd9020f0064ee1f681fbe92bfa31817f2fa",
    "signature": "0x1df4cea5f47eb936bfd5e13b568c38d0f2aad1c21b9a6c7597ebdffc97f4b7f70f1344a4921a065850991d543fe6885073e7ad71be9d3abc88180a66ac6db34d1c",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}