{
  "manageEntity": {
    "action": "Update",
    "entityId": "612535858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierauxaueci66ljarncdf7v5sxwdjhew4wk4t2pcpa76qinqku7ducka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":9733393},{\"type\":\"playlist\",\"playlist_id\":1759934957},{\"type\":\"playlist\",\"playlist_id\":76026918}]}}}",
    "nonce": "0xf7424c3515aa84f79cd5791238ea513f0b27b42e708e1710da4a409e74fe7c5f",
    "signature": "0x46bf9f9b83a6a43a5f9e180a81f4c13c78e388171ed73d32b91fb3a175547f331b8683a5c8332fb9ca2b69bf5ed7f2ebb3b89144e8a2fed960977f0cf1f042991b",
    "signer": "0x473ac84E91B21C4fEEa96a0742db8bAeDC7F3A5e",
    "userId": "612535858"
  }
}