{
  "manageEntity": {
    "action": "Update",
    "entityId": "521472352",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf2d98df6222b6a881047d375e22969dc7afb04b28c89beba783c51e7626b7f35",
    "signature": "0x0a6969837a2ca20afef46ad1f852a9f506e01e01d905fe47fd10cb38b80536b67c1eebd6c879db455841da84a70909eb56f3c6ff63349b368dab7352a993c4c01b",
    "signer": "0x1A8252Ff66942bF960FCc7c8806FebcB9156bA63",
    "userId": "521472352"
  }
}