{
  "manageEntity": {
    "action": "Save",
    "entityId": "327334625",
    "entityType": "Track",
    "nonce": "0x46ff1ad329a62ae8e4d3bd99ebdab256676f9d419e3ecf40bef936c565624ade",
    "signature": "0x3aa191d6b85dfb25c4fb65ba673d81be7f41f75f199a296b4c5d41bdb79e895c1b77f8f76d41efef2d4f74368ace602c9a7451772131bc8e4f2323bdea93d1331c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}