{
  "manageEntity": {
    "action": "Save",
    "entityId": "274350942",
    "entityType": "Track",
    "nonce": "0x41dfbed39a2c944a78107f9047336dcaba258d243ecb7dcca825699360bd0ab3",
    "signature": "0x20f8faa95bebc8c2818441c0a52cdfcd772ace2d3aaf971ff1427f7c2e867ab27ec30a98ebf1564e8f5b1a31365ef96b5a523295ab18979a463272a182badb111b",
    "signer": "0xE6a2533061175ED4c7f073A7BE3dc4189A4DE47E",
    "userId": "427249190"
  }
}