{
  "manageEntity": {
    "action": "Save",
    "entityId": "43285",
    "entityType": "Track",
    "nonce": "1790181389589775143",
    "signature": "0x3caff0971382dc0c121fb64963f1bf6c8f13f0cc787c92d8d5d31ee2bd625dd0222cf5b0178347220d99275016245df348a82967b539c38aa9e91280b707b0931b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}