{
  "manageEntity": {
    "action": "Save",
    "entityId": "1834079238",
    "entityType": "Track",
    "nonce": "0x3faa6450242b4285ca13c9fb7968d6dd2c45e689db4437c432c68e524bef1c95",
    "signature": "0x6b0e28e6d595c38167b79f50014dfd71fc482972ad3874383f08b4aff8b4e409665fdd4c8ded8a9466abe0d4dd65681743be59a96d280f1d5f3e584ddd80db041b",
    "signer": "0x2d4E313C5C5BBeCd31f664627b0a91361e5D04D1",
    "userId": "106406"
  }
}