{
  "manageEntity": {
    "action": "Update",
    "entityId": "907403350",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1bc8117f4a40c103662e6454f30d446f1dae856efbed2181db03648f3ecf14ed",
    "signature": "0x981d8ed16d0701500739315ef1a6e7f74b52dfc5e0226658d36d72b8a9f66ca5180a529fcbba11384fb589d33eeb792821d6061ed126f354e3d87c3b142766cc1c",
    "signer": "0x86eAf47d5f971A41E77E8E60f25E321E25451104",
    "userId": "907403350"
  }
}