{
  "manageEntity": {
    "action": "Save",
    "entityId": "1797900788",
    "entityType": "Track",
    "nonce": "0xd8c59704e03b949f75f02628fe69ed74233303816d374250ef725e758f15b664",
    "signature": "0x8928980db8ac1cd392ae4243637f46c9e3f393b6fe580e4d8766f3f66bc3b96b11d940edc6fea1147ea212e871c9e1fdb04f5995248e0197ca3c54b31d4c2b731b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}