{
  "manageEntity": {
    "action": "Update",
    "entityId": "550747401",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraket75t7bz6s543xla3kbsyhsohtxmaj7vpthvdcjqhz5tbhccfaa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1083933305}]}}}",
    "nonce": "0xbc4b7b287de0be9f84e5bec4a7667ff374d31c036a399721d6d5ea17edb1c99d",
    "signature": "0x0787272423baf941a55f14a1f9570cdd479c6eec2e4f490fbf384f3c9a7b83f92d79976fae025080d4da99f7b819651ce22a709b41150d8079180c9d027058061c",
    "signer": "0x9c91068943495A5121bB90345fEDED3BEa44Baa7",
    "userId": "550747401"
  }
}