{
  "manageEntity": {
    "action": "Save",
    "entityId": "2134371066",
    "entityType": "Track",
    "nonce": "0x4bf17f6ea53a48a88ee75e16a55c07c89ae0a415045ee7b3dbab250ded10670c",
    "signature": "0xe83029bf377265b60184e74bc436cc60999f621482c5210a7bb5905b18aaf3511d441d93f37cc76c08ad9c38c7e39489420757264967071f82f02364dafc0e2a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}