{
  "manageEntity": {
    "action": "Save",
    "entityId": "464312081",
    "entityType": "Track",
    "nonce": "0xe594943f9fcd8e91875635a0405b41a4daf7e133347e0043c9245c7f374ee206",
    "signature": "0x85cc5cba1bf5aa3f872acddfb0b64298657f84127e612c6ca756ab12e35446e55a0da7dd0f61979d00ec29c8ac77ab72c8e12fcd0134b3f50474bb79cf8e2d511b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}