{
  "manageEntity": {
    "action": "Save",
    "entityId": "2030976461",
    "entityType": "Track",
    "nonce": "0xa67414e70377d83eaae393e4bd2990493d22f2a64a0eaee38e0e322d4aef8897",
    "signature": "0x6af74de31deba5f8ff508e6608fa1a0814c947ffe414f4763f0baee63eb116564f641caa644262d18584461b668e448793cdc0d1d9b1658ee9339aca3cde58f61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}