{
  "manageEntity": {
    "action": "Update",
    "entityId": "343804269",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x66c07e74ad61d802b0788607060788bf66f2c4a438e0e5c338afb6369b816416",
    "signature": "0xbc899a10ec7325d462b1234b30591b31978f1b0103f246e9bc336856897fa111036d8ba1248c2df95c3764266ec9cee90283e93bd96c812ccaacbdae2e0222491b",
    "signer": "0x353B180c062aC6fB3ec37b48f4Ad04F20348a484",
    "userId": "343804269"
  }
}