{
  "manageEntity": {
    "action": "Update",
    "entityId": "43686465",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9e228df2219de559134239f9060d786133754c8330d95264bdb65523c48a5fb5",
    "signature": "0x70b12543bf49c0f56a95f7c0d27d7c94dabdf036f749d2e12768dfc40798b8a649e7c322a66133f7891285d078e3c253598efc1837859eb6d32003896119e2081b",
    "signer": "0xe6896f375EfDD7aE22ea0E0958a36f1Ac1861a95",
    "userId": "43686465"
  }
}