{
  "manageEntity": {
    "action": "Update",
    "entityId": "998615652",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x35478ff72b4c51a4ab4607d36ab36be41792acfa496e0c7972b68e0cd98107b1",
    "signature": "0x4231b0c58acc735972b550e3dfa52cd8719bc90070ce7e276014754c5589bfac5d278eadb4dc8f5413d9d5bb5bef0082b775113f9878869174466734977dfe651b",
    "signer": "0xCB6815F8D1cEA4A681364CF99f401E6ddCDf8c23",
    "userId": "998615652"
  }
}