{
  "manageEntity": {
    "action": "Save",
    "entityId": "106130267",
    "entityType": "Track",
    "nonce": "0x35b739e274b2e00236815f7bbf8b76ed0b0e082edb330c5de99dd6ab80cee4c5",
    "signature": "0x5774b25bb740a08166a1989ca8e18838dc427e63093ed13bfc88a4ed82ce9c04663887f4f6ebef09221aeddbcea7f9f6953413d3021f670aaebc6dbe4382d4601c",
    "signer": "0x568426a5D555ADe94657d547B2Df4a4dc1f0C014",
    "userId": "71569007"
  }
}