{
  "manageEntity": {
    "action": "Save",
    "entityId": "702232097",
    "entityType": "Track",
    "nonce": "0xac451a4d1d4263cb83262a59a4e1bc3654bb18349896a9112aeb9a86e3bae2ff",
    "signature": "0x325cde9dbd27ac890636aede0e1c6786ff36c7f2ffb8ce1999fe6222bdde3932488ab4841ade3d467fc52f58c0d9dd8f9283a7848385d5ea33fb7113f354d9df1c",
    "signer": "0x01eB7915E4941D64a8ddf370bE06647ad5F79d4e",
    "userId": "911613164"
  }
}