{
  "manageEntity": {
    "action": "Update",
    "entityId": "213815495",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc8ef8eb2f9d307098ed24ecf78e03c19eded1572e805f0f70f020debffe327dc",
    "signature": "0x22ee1c3697704c6008e36ece30231b07b99a8d73ffc39a121790ec506cb8b3004414e63fac192e40df7ba2398ac542c2abf065a210ba66fd02cb79f1de429fb91b",
    "signer": "0x4a4CA29602BcD0808B3047F6d0C167b8895e9bfB",
    "userId": "213815495"
  }
}