{
  "manageEntity": {
    "action": "Save",
    "entityId": "417114397",
    "entityType": "Track",
    "nonce": "0x3050d251b0851405c20455ca348928a83fa1a088d514eb28a39e4599a5560725",
    "signature": "0xb24020d36ec6481e126f242ed425c36094cf149c0d437c3ff9bdff237612e3d07d97a3daa366856b643b2c60d4d6fa6ca8048ae52bb85cad21dd6609d9ee423b1c",
    "signer": "0x4611Dec6A3065fb4F7A23A8F14C1c300A8Eec7C6",
    "userId": "650714154"
  }
}