{
  "manageEntity": {
    "action": "Save",
    "entityId": "962001",
    "entityType": "Track",
    "nonce": "0x234768ae2947ab1130e17210f07129ca9c26bbabbfc593c25e1b80fcd8fce143",
    "signature": "0xf969d943534bcec31019fa4c36d18e4016ee34db3746c4c76825cc96f62a5909649f3d7d2f73ff05438e837ddfc03c44947953dedcda952c7cb43462363a0fda1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}