{
  "manageEntity": {
    "action": "Save",
    "entityId": "85209255",
    "entityType": "Track",
    "nonce": "0x934fd8b987d5924c6d48ec0ce292cab8b5ae6cff03e0a3d9325c2861725b77f2",
    "signature": "0x0b88a355ca925057e8e00b6be06ce78a08d1e95c5703a6a28defff078f705f9c5a2bde528f4d48713e33b6cc9a917ec8125a7b809883003b0fda9b602bbbb80c1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}