{
  "manageEntity": {
    "action": "Save",
    "entityId": "181750842",
    "entityType": "Track",
    "nonce": "0x00329b58830a37563150e8df5c9f5e7abb506f7192489a0609584883c1e72588",
    "signature": "0xd3eed66cf182665aacad984d5d04d06696e70005ca9a5535518dbbc62ab4bada63c9746d47fac4de5eb90f863c76fa77ff4d3c8fece4be88cc2bbe6d4b486f521b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}