{
  "manageEntity": {
    "action": "Update",
    "entityId": "674724902",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierat5nnsry4caqp7qfy2hkokizwlfa4ha675jsnriocqte47incbrgq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":431069960},{\"type\":\"playlist\",\"playlist_id\":158767467}]}}}",
    "nonce": "0x458d3bfc10a60a961483bfea9871afd61924d817ca07aa1a5a2a1cb41bd8c943",
    "signature": "0xcb3cbf5f2d69afea2f6ace195d97900d76b68562d304436345d3f1bb0035422b5cee4a8a7162ad95f7593a42f7877001c6db1922c23ecbd7bfda9c4c3a74f0f41b",
    "signer": "0xec1Fe7f623469C68eBB52525A42b86C0a36db1CA",
    "userId": "674724902"
  }
}