{
  "manageEntity": {
    "action": "Save",
    "entityId": "1763245153",
    "entityType": "Track",
    "nonce": "1792407465086029533",
    "signature": "0xd06c0e6c15af90c74dff9817d863ec915a446e9c074a1dd3e1d12d0187f699557eec9457d9bf5e189c48f63d57cc38a8df097e76e9bcad6388334adce9d2d1541b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}