{
  "manageEntity": {
    "action": "Update",
    "entityId": "293137833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8db2c38bb79183fbb81d337dcdc9bf173e394af60d047d17b1def60f855ff831",
    "signature": "0xa082c989cecd457a5b72da9500350726eedf224eb69c32ebba8c42eea353077244e4a640443521337eedeed4bcfbec7e560cd364d0d46e288c4a5b91365ceb271c",
    "signer": "0x9139bE80Cf6D934A072B63279dcE183f715CA770",
    "userId": "293137833"
  }
}