{
  "manageEntity": {
    "action": "Update",
    "entityId": "873212552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0f2b2997577ba93d08c20d13cf5750890e7b43c4f499f11f2d72369073886e41",
    "signature": "0x8e7c48c6bec3ce78181a8ce91bbc03b30685cd3b10eca4effe86d8513810dfe71ed095596b839c522fd4a9ea367bb8557f4dc1d3cf30ea3ac0a03c7ecb39a7631b",
    "signer": "0xd70cC881fbB38d68490cf7A578B24F81B4d24fb4",
    "userId": "873212552"
  }
}