{
  "manageEntity": {
    "action": "Save",
    "entityId": "252562",
    "entityType": "Track",
    "nonce": "0xf26bf17e66f3f89f754dc964de7db6fc9f67d2d7c47238dd07ad341d4eef06de",
    "signature": "0xfe16c0c6fdbf7a544066eb6052399f7d05a748529c4e468c877c557fb50849d44a50ea523fcd87952fb1c7143bded0ac90d238fb722eaeee3e7f8a37b59aac4a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}