{
  "manageEntity": {
    "action": "Update",
    "entityId": "589258310",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x058766c5dc79b121a9b5b1a1e21221002fec0116ea83e226cda980c487b90f26",
    "signature": "0xa5b70ed9b21dadac0f9fda3f506e084da35f369b652152748a62a1c8345a894e30ab50f88f1167c0d937e32320264e637665016d811433b1059bc72cfbc068771c",
    "signer": "0x7B12EF8dDA5E7f50B80af62Ed1fE585F9A88CB28",
    "userId": "589258310"
  }
}