{
  "manageEntity": {
    "action": "Update",
    "entityId": "23998018",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02214b4726a25d8b0d909be06a15332e9f1eb6e61701c6acaa7ae4be626d9764",
    "signature": "0x27dd1af65988a55b4984a39e40772c1b01d7568db919ec6361575eef6961f9ff2d4ca3e472ec47b0899d6bc18c04b2690d2e9cbcb92dcdf1672b0609e1134ba31c",
    "signer": "0xf8Ae2071A8e584a628FdCC76a8fD7c9F07Ac0090",
    "userId": "23998018"
  }
}