{
  "manageEntity": {
    "action": "Update",
    "entityId": "8550967",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x630d4f2f9891873cc930b0d9d613359996dae49231993604903dd7ef766ec988",
    "signature": "0x0d913a11fc612e1796d78074d5141bfd5a5152a61164d043f643c4e9f901d4290ed488bb3e5c1091e92dcb78e59f37b7763af86cdd88653f2d8b6ca0da8257301b",
    "signer": "0x7CDA77E08CecB6DBD20490207A731143FC007CA7",
    "userId": "8550967"
  }
}