{
  "manageEntity": {
    "action": "Save",
    "entityId": "675758706",
    "entityType": "Track",
    "nonce": "0x8ea5c6ccecfcc59fad82b47a0f7015f09737d28fc2f384cbc05bffa4a127bcc8",
    "signature": "0x761e17170af8834d6662f0875ae5fab6ecdda6a3ab671207bdd1670e5e87583d73e9955b17ea56c5bb9fa9559245085c0ac34598f3a48ec974e01f24401846771c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}