{
  "manageEntity": {
    "action": "Save",
    "entityId": "722160137",
    "entityType": "Track",
    "nonce": "0xe69e7d2f4e57015f96dfd27bcee082a77b1a88e6fbd77d128cf65878ec47a52c",
    "signature": "0x31912e89c351dab2360e99bcc8b188a91f448a626621293dbfbdfe7812501ddb227363776af317b681a8fcb3ebba57add870fa31a2fd822dd384f5334592a0bd1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}