{
  "manageEntity": {
    "action": "Update",
    "entityId": "189200545",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9c41240ef7a88259ed989d79e92aa9462c8a1b3217e7316841628554b7ec1655",
    "signature": "0xff881e2c2699dc0115d0c17cdf5dd3478de976e48190f1bf0020bf978c10dbf70fac3bed76d70ba675e4cd257a504467b86159985d62c3250dca0f4e48af23db1c",
    "signer": "0xBBc166d6cBCCC912BaDBd8aAB592f6e9D3A90301",
    "userId": "189200545"
  }
}