{
  "manageEntity": {
    "action": "Save",
    "entityId": "193757755",
    "entityType": "Track",
    "nonce": "1792393823550246700",
    "signature": "0x14913f7b4ac4ed7e7bf6322c9036f79207bf82d3a960a621bc6e2c5b45808ff4236c6d9c379b45c6712ba6cc2da7483e2fcdc746c2c0565871b4417cbcb114391c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}