{
  "manageEntity": {
    "action": "Save",
    "entityId": "1217459262",
    "entityType": "Track",
    "nonce": "0x8dafef24a44af0a770b0bd6dc047c6bc43d5148c19c4370821d13b1f28ac91ae",
    "signature": "0x273079e782f7e225bf8eaaa1ef61433b4a1ef6412fe42d369c3e9825e1cfb14b246adc7c6bb73aaaab3d3e236585aba10ae1b9b48b3f1326328d0caf8a415c311b",
    "signer": "0x4A3D09CdfD42dE4C57dc67B09a40B5d9172bD69f",
    "userId": "787102835"
  }
}