{
  "manageEntity": {
    "action": "Update",
    "entityId": "25596281",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xabac3b44e481285c9a48832c6536f4954237f19fc6affd20d58d17266a6ea9a0",
    "signature": "0x4a56771868ae221b1e163bae5fdce8485383c628137e0a1f9986a49fb87526e81a3a9d7fd3db08b72d9038ebabf92a1997d03b5a6ffade1c6c2bb2af40ad1ed41c",
    "signer": "0x709FD3e3ad08B3d3726132D2d40e0E6d92d91575",
    "userId": "25596281"
  }
}