{
  "manageEntity": {
    "action": "Update",
    "entityId": "340727531",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf0ed3f8e6dca9a7ad0aef9bd78679456a10347b2b21bd7989f19ff8a1d8733de",
    "signature": "0x32798a420789d3d69f4a88a9e3cd06fc7533ff4a825282f4a6962b28abff69ff5156631abb50f477f4f60cb39f167f6ee5dc45da10a0e8d8e3e90ce044a01aac1c",
    "signer": "0x667d286a481e16925e97AF3EeeDBA3ef47ebC1fb",
    "userId": "340727531"
  }
}