{
  "manageEntity": {
    "action": "Update",
    "entityId": "293137833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdba61bde1c2d309074ebf8042adfb33fcf961fe1d15d271e7a403256eaeb2510",
    "signature": "0x6b8171cd9fcffc617aca2eef237b20a06803a8034bd6255ac9fd7aefeefb28315783dd069cd4dfccec379f3ac4ca8859ce528ab8c114da4baeec396d98c659171b",
    "signer": "0x9139bE80Cf6D934A072B63279dcE183f715CA770",
    "userId": "293137833"
  }
}