{
  "manageEntity": {
    "action": "Update",
    "entityId": "388928281",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x01eb0cd687c58361ee49af899c45d07f3ceddd90bc47aa53239bfd0fa2310a97",
    "signature": "0xb8794afe76ccc4638ce5c89a93c31f2b24aa6e039c8e9de48a72fa259d85760221db1626b4b22cd125d5763bcf635002d5252e998e9a45cdfc043a8f60bb2d801b",
    "signer": "0x4911fc6eE12AADfC1Ee7719788e2521Ddc441F33",
    "userId": "388928281"
  }
}