{
  "manageEntity": {
    "action": "Update",
    "entityId": "612535858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieragosmn5glhqblsettm5zijqpi4awj7okf2qsev327e7l3c2rxjuaa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":9733393},{\"type\":\"playlist\",\"playlist_id\":1759934957}]}}}",
    "nonce": "0x3e9c1020de86c810ede6a46d27a4d16cc664849cdc4880a3437684504b227b23",
    "signature": "0xd99f7e2320d096412d61debe6ee09b4acae86cb2801316586712ad9ede4948127b10fdd32a2add11cae0b8987631b2a46838bd23d26f6040022135799cbaf6a31c",
    "signer": "0x473ac84E91B21C4fEEa96a0742db8bAeDC7F3A5e",
    "userId": "612535858"
  }
}