{
  "manageEntity": {
    "action": "Update",
    "entityId": "144666761",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb69b951333b3d08ef9fc14546017bf4444917b38bf1d49af0969279677a481e4",
    "signature": "0x3d19032e6213eedfd7dc84cf336f8bc22d31f70361231260e2f2c8cc8858b58b3ff81ccc41cdf84827a67f54e421ae2b21338fefdcf3e9ffa78370137c5ac3451b",
    "signer": "0x3DD960Ec163EE24687943075a3363B65E0B4F7A7",
    "userId": "144666761"
  }
}