{
  "manageEntity": {
    "action": "Update",
    "entityId": "908790659",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x78d73eb9e78391b2de78ef7227f181c7fed3cb0950f0c2fc5b092b09eacd5e11",
    "signature": "0x90a645b3bffb9fe90ace863ea88e798a8fee52e398bc37e1e3acdba49b0506734f0a4a1b58cee87a70127ba24d7ccc82cd8ca06b856a832094fa5710f1ecd8941b",
    "signer": "0x665D2F5a62cB527e6A658063CF0633AE904D07F0",
    "userId": "908790659"
  }
}