{
  "manageEntity": {
    "action": "Update",
    "entityId": "715573876",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraugggxe3osdjhp25pcqute2bdx5wssuafun3ah7lnmq3ernvfpoyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":629154592},{\"type\":\"playlist\",\"playlist_id\":375592719}]}}}",
    "nonce": "0xdc9bc1312ecb42c87014a98b6f51fd9e1c1a9dea253e188171795a082b3d1dc1",
    "signature": "0x12108f228474bc515c2b7f26c88e181627a6d3d95bbc9f63b74a0fae303258651dfbac0fe959a5ef6bfd84402042a04730ba83cba808a5682ad198ea452ae7591c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}