{
  "manageEntity": {
    "action": "Save",
    "entityId": "1628432785",
    "entityType": "Track",
    "nonce": "0x74097b677925b4503ab2b0eab938ea7895bf5b8b8e024ac4caca31bc3d1a93e2",
    "signature": "0x5e11179a2a2ef1ad692762d4c0593eb538ea58c584899142968916933047917f721da346188e0ffd8a2ecbc1a4416b69da30c6f63c033b902ec712f6b2c2e6681c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}