{
  "manageEntity": {
    "action": "Update",
    "entityId": "974110018",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc087f074ab56cd29ff20c580ac7f497eb86426c508d8e5cd48c50a01cc0478cd",
    "signature": "0xf3f68845d323902a9f2f2c4c3153ef12e6113aa319f68506b1d9321082024f6f0d3282c2b27818c3813e97afc1087ac4f9849aafd25efa82e2e258cbf09449d01b",
    "signer": "0x615A557E62EFfD4950805ab48294945D82593241",
    "userId": "974110018"
  }
}