{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059088",
    "entityType": "Track",
    "nonce": "0xf05fb745ac6d22d0c01c135121430c4aa2c2988549eece68a610350a4908cec3",
    "signature": "0x9cf1e4fdd520c2a33df2c84ba5723f4d06805a98a934a845cd0aff4eca3aa42f4ec70cb4bf9cc6e7d552864dbb809e193e1cdf468dc831acb47e2d36a78c90081c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}