{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x148931200177500e5d4a581d6349f1cd0a0782ba82f8fe24b0b8a95e90fbd6f5",
    "signature": "0x3dc7057a74a232e9b58de01634cd31a59f5e87010710fa207853bba6f85a5a8753c3b093984f05157273be7a88ee965caa5f32f304d2f810d43bb7ba136dfb5d1c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}