{
  "manageEntity": {
    "action": "Save",
    "entityId": "118862",
    "entityType": "Track",
    "nonce": "0x6d20714872aa4db8e7a618fe9aea2134e85cd74a3352d7725e033f6fd160e317",
    "signature": "0xf056725d9f4e550fe664feb7b57ae3353b23904534f734964002a0fc066e86b052f04d267c9ade6c8163c9ae7a3bd5202285c5c7ebff6ece6ba06fb9d71c406d1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}