{
  "manageEntity": {
    "action": "Save",
    "entityId": "2112094863",
    "entityType": "Track",
    "nonce": "0xc8f48f2ba3c0b38e64630d2c87e06197286803158c880ba2e9f766cd1af1522c",
    "signature": "0xecef61c41c51e81220360f35855531f37d3584d988a3bf5b74177ee10e325909012fef10a2d1dd83bffb66761d379ecb5b835ac8da23f4e51648c24f29031b061b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}