{
  "manageEntity": {
    "action": "Update",
    "entityId": "422375588",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x026efd676ca11be1df53d218c40edaea5b37552e95fa527ecc2b283529b21fc2",
    "signature": "0x1986a0da714ef0a60ae603e1a61d5812fd84989d7db69206e8e5b26f116b2f52243da7b8be65de14bd2b080a3431825ba2385622ee80232dcb0e152003415bd81c",
    "signer": "0xE3D6e50d681C79be7e5eDbca5b53b413f955b78d",
    "userId": "422375588"
  }
}