{
  "manageEntity": {
    "action": "Update",
    "entityId": "663242911",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x393e5c3a86fea4d5d1e84d86330458e7e9036f586b41ea1383038f105e3b4b50",
    "signature": "0x13838655261efbca1edb43d02e34f5656452df56002d3cfea281685828b694fe42809844da1a3a2e4abbca2cd7d2449fc4d317f388582bee08442ffc1030c7101c",
    "signer": "0x60077869Ece6F465A0eE3536C25c29A1D374afc9",
    "userId": "663242911"
  }
}