{
  "manageEntity": {
    "action": "Update",
    "entityId": "263196891",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7cc2319d2a24a27c8461aa480e8760115182100ac6ae6b5fe47c9e253b3e0d81",
    "signature": "0x064fcdd629b6d588b0f6a5f2660dd218861e1d3ec5f9481905ba66788e3b20a0373185b844267ecb30c2c20e2950393bcbc6f6a109601551dffe89ce6141e14c1c",
    "signer": "0x76b75C45DAdC4672DD3a4f5B145627CfFc2d451a",
    "userId": "263196891"
  }
}