{
  "manageEntity": {
    "action": "Update",
    "entityId": "392709914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0a580df4969a8096d81fdef47c46675f1e470e170ca92fc55558b324e4e1aa86",
    "signature": "0x3f211421c2ef18498f13ae9f66af0c5e26691783c7b970a20829cb49bf19bc8e4bb2cab25942f85c8f37ba4c3092b77336b1fc4dd31c4645f2106a1ee644cde81b",
    "signer": "0x673abE35670A57Da7AD5a8C463bE5361eAC5adF8",
    "userId": "392709914"
  }
}