{
  "manageEntity": {
    "action": "Save",
    "entityId": "1734529578",
    "entityType": "Track",
    "nonce": "0x2afbbf88f4967328fd4f525aa035462d9f1b0f274c0aaaed6199fdb4d61a3ba3",
    "signature": "0x13b157bfabbda58de3350a6b47ee3dc90ca3caf56486e45586ac703c6305de2207814743608a1a468caf267d2f5d490c1c99a2dae9dc7054a759072f6ebe57931b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}