{
  "manageEntity": {
    "action": "Save",
    "entityId": "1022681404",
    "entityType": "Track",
    "nonce": "0x183ab0dd8f51e7507c270a6e285c3ac9507ab9c75e68bd39c4f48e8c5ba7bdbe",
    "signature": "0x929330375b3cdf84b79b9e7b6aa9526bc9082b524d8438b525793e8c323207a571e291cda91bf69df559f2384056a3a50669b45e1df59a16ab13fcad6b9025271c",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}