{
  "manageEntity": {
    "action": "Save",
    "entityId": "1128920391",
    "entityType": "Track",
    "nonce": "0xb08f729ea6710e73df68ac0fe04b2e435c66e51228dd830b15ccf3c0782bc38c",
    "signature": "0xd84715819f6fc3035db3445483ad5c2d5c83aa054d78676c91a9d6925b179d256938378a41daa15636148c595539c25eb64c880dffb707d08d04ab7c5dfd85131c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}