{
  "manageEntity": {
    "action": "Update",
    "entityId": "740716267",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravr6wdzk5epecd5a7y2ato72m2kefj5vtlhaxn6wkjcf3kxxga2cq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":34137}]}}}",
    "nonce": "0xd4d3508696b4b7ceebc8132abaf97848416155b3ae46ae31109003a356f7d86e",
    "signature": "0xac6f59aaa5df63bd3c7e0b9553a3e83c4ba1fae799d699c95c1ecfe2952dcd374b437274900c4e9c7c98e28641602a36bd342c50ea7ed008e64e69c34be613de1c",
    "signer": "0x8876D680776210559B6cf36a9A3e1969F0763775",
    "userId": "740716267"
  }
}