{
  "manageEntity": {
    "action": "Update",
    "entityId": "912674314",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3c74ee709eaa76e18d21d857302ed644c25c08f4e655fdb977fe6253c7fc4d89",
    "signature": "0x4043086b2480effc06911abf20c5b9dd268eece38f6f6e45212b3c06bab01bc330ab65734a84d9e5b9319e4a5fe942401b3d5778c497808f789355be16e5b3431b",
    "signer": "0x38F50a3556340c9E1365557DD31F3549c0315FB7",
    "userId": "912674314"
  }
}