{
  "manageEntity": {
    "action": "Save",
    "entityId": "256937245",
    "entityType": "Track",
    "nonce": "0x23c92dde6c2c70d0a00b026cd08c6749d321491e0b88f062a77e837214143469",
    "signature": "0x866c19dd6732a43bb2f9897e8ba0cf8616f6648d5c6cd570b05a2fdda7d3ab3b1bf85954821f03c1680015f3c97790bc5a249357c23cd9ea4ca0b97de2d975211c",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}