{
  "manageEntity": {
    "action": "Update",
    "entityId": "281406791",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7e4c8dea5982241b7f89016e1ea1ee6c8bbf5029037a8c6ffd87a443c32b0ea0",
    "signature": "0xbc494cb14be39ee40046f95442086262971ab2f55161fddce74f10683a293118035e4be293c09d84e19adde8ed4f81cbab92fdaad7402e9d80e235d24a0e6a8c1b",
    "signer": "0x3bAa3e70C456E4B4392FBfb0474cF8EC46fEcaE3",
    "userId": "281406791"
  }
}