{
  "manageEntity": {
    "action": "Update",
    "entityId": "897638994",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierapd3lw4aflg6iui53bv6faclgdi7usoz2hndscuotctv5d4macgfq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":494560433}]}}}",
    "nonce": "0x40640544dc192428e13f837ae7809f31124acb715964cd75bf743547dc20dca6",
    "signature": "0xbaf66d9fc2ce628f58e1cc6ea6f59a6c0e5d0b98fd92e3ba9c6d33254a703cb54db6d3441c21d84ec3a316066bfae583db2f61d446e6f35eebe54116ba5671c31b",
    "signer": "0x4f5054353677594Da8B00602DF03a2C18aB5a9Ea",
    "userId": "897638994"
  }
}