{
  "manageEntity": {
    "action": "Update",
    "entityId": "111726858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd6d3cb78072f32bae813de6d6fb5ea4e2a155509c5f55eff4cd9e64c44beb639",
    "signature": "0x3b914eb04654bddd9f6a2f89fa12f90ea2da307b6f51d38f4905ab0945dddd660e22e3e87c4cdf5dfc329b63a145d30c1ea32608454cd09c40d1a54c353a7af01b",
    "signer": "0xc257Fee476D1eDb43a48CCC483EBDa6D62711d4A",
    "userId": "111726858"
  }
}