{
  "manageEntity": {
    "action": "Save",
    "entityId": "1588827868",
    "entityType": "Track",
    "nonce": "0xdf705a64cde70d6b4c130b281ea22cbe8b2c8a61acad3350fa7d693e1cbc4874",
    "signature": "0x0c3d6f5bdbf9f3dae3a084b5d598ec0e838fa2df10adc889406667b4a6f5fca224d285fd9b3f0a390d21c604661759b5aa08c772dab542c75750a528a40eca1a1b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}