{
  "manageEntity": {
    "action": "Save",
    "entityId": "837772526",
    "entityType": "Track",
    "nonce": "0x33ce065d000b6e56c34884d9af6b0e052baa007cc16359bb8bcbce0a7755b839",
    "signature": "0x4080eb69fe832f64046e30259cba86e2a121a52e1b50d908a2a370174f5dcc086daf6139c8af32c61ced690315eaf2cfda8669ef1957b71fc0f943e6bc2acc351b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}