{
  "manageEntity": {
    "action": "Update",
    "entityId": "755330176",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x758ae89761e2d0d7868f50bca90faac2e7eb4a8348d72f887dd5470223442307",
    "signature": "0x0c8eea23b2f4ed73ab8bc5eb1ce1ec151c60e43f0a1ee16d454e07c7609900334e3ecd591dec0e6b90766fb8770ad1bcfdaf1d51052f0fd591abe986bdd16b7a1c",
    "signer": "0xD98eADAa29791533E4074Ec7A4d2eE7Efa0731d1",
    "userId": "755330176"
  }
}