{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdf4f0a4abb9b9efe08ea77cf3346fa9b48623989ef720efa6644f8e3ab63303e",
    "signature": "0x17947d5160b095724b9d239c24c3a8d10fa15a8eb284fe768d0125a66ea5c7682eb86a66b13a01df9e731222a1d4121484b30bdbb806fdacae4f9a6f7c50f7fc1c",
    "signer": "0x8EEFbF3d3dD9458d60fFa789616Bd714f100f9F2",
    "userId": "75683552"
  }
}