{
  "manageEntity": {
    "action": "Save",
    "entityId": "46289",
    "entityType": "Track",
    "nonce": "0x128c1fcda1de4c1d459f3332d42786f8cd63ac74cef902b127f9da21fc8a5f00",
    "signature": "0x8c64d71b1f54198e39329ec617b2581d8c7a4f8a6b3325ff4b776b92612a528a35da7f50812dcf841d60cd54ab22ed37ebd208659cf895039d31b0e323cb6c281b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}