{
  "manageEntity": {
    "action": "Update",
    "entityId": "815938233",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ce0f1b1ca53d37a50225fb6af718891357dfecd231194e8927f14bffa2face2",
    "signature": "0xaf5abe1c6aa849b91740c4adc0fab5a5e60d1e81b769e9d37b4a3756b3fc6e8f397150c188e3697e6c5041b0d43893ca945465a72c5f0dce3ffe156c1483f65c1b",
    "signer": "0xFAfB70B50eE7F48187e6388F24dFCC108e9f159F",
    "userId": "815938233"
  }
}