{
  "manageEntity": {
    "action": "Save",
    "entityId": "183291712",
    "entityType": "Track",
    "nonce": "0xf636e7ad78b4ec5363dbb86b3c293ae8d54fd6e15d42480a2d5406d72d21bbd6",
    "signature": "0x9e6920e79c0d44e9f15cfd2eff94f220a08786ce0b687f00a934d9776e59152d2970d9407837387da970264f959c3eff5eba79ef2092a14644bf4aacd2c6f7751c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}