{
  "manageEntity": {
    "action": "Update",
    "entityId": "308343139",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b271cba9783da53a337f7940c7ee422d77aa5e3f4705c470c3572bf7f68c1a1",
    "signature": "0x1262e74d2ec4bbafd94168c46a831e709d6b72c654ba2251ea4aa297970af7142146e3866f7e52ffe05a52e649fb62e83223451acb4c27c8f001a738036db72c1c",
    "signer": "0xd540EbCBe132277641a47B8b44c7c853ed04aE1b",
    "userId": "308343139"
  }
}