{
  "manageEntity": {
    "action": "Update",
    "entityId": "178890283",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x50156fd0217b395a4acc8b25f0666f4e51b3e2e6c728e2c39a9739c5a83895d5",
    "signature": "0xa81a8bb6034559301741ff2d7bf792a25834656b5aeca5ea46d50347c8d3f7de3c38168a649e993a4ef28ec79dcc83ff995180748196f75a3d826227d20519b21c",
    "signer": "0xCA0F92aBEF92e3205D73aA15202bbBf291F9dC09",
    "userId": "178890283"
  }
}