{
  "manageEntity": {
    "action": "Save",
    "entityId": "426607486",
    "entityType": "Track",
    "nonce": "0x5a72a308980d06a36521d69fa5c68c4b1976c6a1113da99271348448edaa9945",
    "signature": "0x350d8d6a5425c4d302ecc65ccedb0e0fe266eecfc3edcba045e3aef944caa8ad7b5c89d8e3ad03de5c0a4f3e4aee7ce6d4b37fab92b4218762cf2bd646c7c8451c",
    "signer": "0x79c47c598a7eC7667Ab46D4C4d5B58bFBE7B91D2",
    "userId": "169595319"
  }
}