{
  "manageEntity": {
    "action": "Update",
    "entityId": "842213503",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa15fa978cd5eb8009cd8ad18d9e555ec058a3e2cbc08295f0c19f3077bd13319",
    "signature": "0xde93a200b8509001dd1e619600554406783f335d6b43fed7877bce38590eb9b9679c73ddc683ca8467804c141b41c4d8dd661cdbd9c7e15f06159d3eb6ff840d1c",
    "signer": "0xeCfBa8420cdA4c01c47d94f247dcA6F2Db44B7b7",
    "userId": "842213503"
  }
}