{
  "manageEntity": {
    "action": "Update",
    "entityId": "671156314",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x312ad81b34f01e86af6d322f4c0f0f3976990ae8fd4e1a1a5fb1ebecd5053c6b",
    "signature": "0x66d8ce4bb7ab174703f58382e0f9be9471bf908bfaffe7c9745a1d68bfdc4ba949c91ef373fe26027b0cf23e0c777e08b151aed605cebdc16fbc7aebe9101c691b",
    "signer": "0xF15ed9Fa7C110922719e5259444B9935566241a1",
    "userId": "671156314"
  }
}