{
  "manageEntity": {
    "action": "Save",
    "entityId": "607926157",
    "entityType": "Track",
    "nonce": "0x4e9be87e07dd62dac2a3f4062919e995a26cd89e5b383b725a87e10260aeb529",
    "signature": "0x71349440b6564fa072422aa61d24902aa662558d41f318f76ac29385a7182e19182fce67ba4ebd5c59bbab4c774a08b1203542f42ae531724fab1b0e625a2ba81b",
    "signer": "0x05D4434893815F914255C028DF9Da0a3e11FE0E8",
    "userId": "181835656"
  }
}