{
  "manageEntity": {
    "action": "Save",
    "entityId": "133870",
    "entityType": "Track",
    "nonce": "0xf2483f00c62562e8f96947b7213f9b312ec812504099c4fb9a12f133c349c6d5",
    "signature": "0x6ae3e930eb9e8831bd15ffb2f4420ad107a75aa96bb94d70608f15c029baffe90f279d4b434334835008b13ae7763ccaa57d5544bcdbc68eb75f308ef43c92401b",
    "signer": "0x92cb84764d2b00ac3BA14De1887E6D2A74784E30",
    "userId": "928887301"
  }
}