{
  "manageEntity": {
    "action": "Update",
    "entityId": "537052556",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2c1453867139be73d98af2ab2573c3f583141fa5a096d1614b4576ba3444d396",
    "signature": "0x7c2152c76f986fd11b2522367e4840db8bd618805e07f0c4ae669820c12550f739b2b0324a7f76b9937ff81c78abefd681b854c9e43dad24df9bbfa0cce96e191b",
    "signer": "0x4582bE7218BF6272417d1F61cA87c4f6d6D7C622",
    "userId": "537052556"
  }
}