{
  "manageEntity": {
    "action": "Update",
    "entityId": "376568976",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7facbe256f52d42c224fae350423114ea96c42fda2ac7edaf3021c99e2f3662b",
    "signature": "0xff362ffb3ede9edaca54002fa19f8ed6dbdc742d3ede5bf6c9c442fead3d7d0508fe2f37a8665674390b51e5c9488c405e0a2099b90cc9a29bb6a3cb585efeee1c",
    "signer": "0x42a0b447dFa91EC646aCA9aB372710c69De1b215",
    "userId": "376568976"
  }
}