{
  "manageEntity": {
    "action": "Update",
    "entityId": "293137833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xabc7423c33acf9fd0553a40f9fe72ee1e6a67523ec920c0e02dd2ae4804aad04",
    "signature": "0xa1b71d7ed3c92cc7925d34139a34bcd7b2c68a926c3be4d1a17eaf4e59d715d6158e38ea6901996f34be3649088c8ad8d8c729b7a66ba60269d167c9d5d3f6171c",
    "signer": "0x9139bE80Cf6D934A072B63279dcE183f715CA770",
    "userId": "293137833"
  }
}