{
  "manageEntity": {
    "action": "Update",
    "entityId": "902222482",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x593f2de9aabae4c981942effda24694c36e80e4ce6eb4f7d2734d942c6e65a1c",
    "signature": "0xd7a314dc8d960308c50e1f92aa76ba20715fdb11572612ce46fefb41ca634b7a0176f0834531838c3acda926d307def83827378b44b28d8104b6c027f066ff721c",
    "signer": "0x252D5DC4748Db077bc60944947dB2Bb8485B9b05",
    "userId": "902222482"
  }
}