{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x87884e077dbf0094ad754e3a44f5bfaa3989f199949fb90452c635885428f2c6",
    "signature": "0xca9a8be1bea064610159075c71e9e07a77be2f1544b03d7d87519f144c1e2ca10335e17edfde40d021254f13bbeb0660c8c430da6039ed086c8f436dd4f3a9941c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}