{
  "manageEntity": {
    "action": "Update",
    "entityId": "854973001",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdd811740d2aae317351b6e3683a4aedfb797c9e17e875803b07395626e611aee",
    "signature": "0x5ab4b9dff02269cd6d2c55fe59829d54d7d886f0f86227843f2eb6ebced99fa7586187a4889a0a7fe5c9ce64c391f079db0638678b600e50d94f87590f8f3c1a1c",
    "signer": "0xDB1529DAEb2cB5c0C5d2dEA55094A5c58c08df37",
    "userId": "854973001"
  }
}