{
  "manageEntity": {
    "action": "Save",
    "entityId": "58945737",
    "entityType": "Track",
    "nonce": "0xa37a8666861695806fac32195ffd942e8dd32f45773803ff86a8c97092199285",
    "signature": "0x03d9bd93d03d5dfba4cf6d4ad0cf55a24fcd24f3db42a5c6b56c8311f9ed2eff33a5c93fa988c32fdb214fdc7535cdc09ddc65181a55add1e986832fbf901a3c1b",
    "signer": "0x92a5082636c97Db0Ae888484D85e4c8494A3B791",
    "userId": "895527427"
  }
}