{
  "manageEntity": {
    "action": "Save",
    "entityId": "326802186",
    "entityType": "Track",
    "nonce": "0xff948f694a523ada5097d46e909f44a98eded815c51b5c54581113c21f41e241",
    "signature": "0xbb7d2cd9456f703c0048c2ee341aa5ca11e368dfe8119778f5da9fd1e7dbbceb4d73cf594397134e71ae8e61377f87ac109f47c2d1f44b09db186534a1de950f1b",
    "signer": "0x71d32288cAa12eFeB3233E78Dd2B45De8ad0F20c",
    "userId": "592020100"
  }
}