{
  "manageEntity": {
    "action": "Update",
    "entityId": "939865626",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7e1fd03a80c90c1f9d7929f27ed1b4e1f4103376b16ada3e45685f5109c737d8",
    "signature": "0x0563c1f6ca2aa651512508863612f4b989ee62affcd1d99cf041754bf7391bed19dd166d2c16ea96fcfebaf9c5711c6b6dceae5b0c596772293ecd2acf30bcd21b",
    "signer": "0x4C0e8973cC8C5BB66d6627C8D489e336f0825A94",
    "userId": "939865626"
  }
}