{
  "manageEntity": {
    "action": "Save",
    "entityId": "801908",
    "entityType": "Track",
    "nonce": "0x22b5d2b88a627dff8917ce07bee90f7da41f65c8da61c3bf64e4222c9f2a9d06",
    "signature": "0x12312fe65f26e2b4a70b0502551ec9358c0944078d70329b08f2815967a3de173024580d4f47866f919b5efdd6f750f577cd3ec8a70d6bb376b25d97189349c71c",
    "signer": "0x7067fb5737305A957dA2309430F18407f0Da082E",
    "userId": "103687764"
  }
}