{
  "manageEntity": {
    "action": "Save",
    "entityId": "1032050",
    "entityType": "Track",
    "nonce": "0xf617f1e5b1c8ae57117945d8adfbae5722da1f4e270a51ffac7d5b1246f3fa8d",
    "signature": "0x97c4bddaeac1120a2606992424bd722a8e73770ee6f3ccbce8a2b2f9cb5982c1265c72d1c7cb6b89a9fd8fc39e21194e8846dd074339c6a82a0790db5ffa4fd41c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}