{
  "manageEntity": {
    "action": "Update",
    "entityId": "326346444",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xec02b6109dfc566f793c4b8c79337e1a96bc56d70ada72a1572ce503c04d7723",
    "signature": "0x7bcfbda83fda0afbc0ea7a86a6a7d759681cc343ae898401b09996c7dec0a6900895cffd6609cf4a7dfef70dd5505fdbdac09a2b752b8d193f751172a45309421c",
    "signer": "0x31DF1a32b4B7f6bDB8c82B2684bDB8beFb00214b",
    "userId": "326346444"
  }
}