{
  "manageEntity": {
    "action": "Update",
    "entityId": "27737813",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe138d5010932e1e5e1d3377a4db011e6417fd325a592651a7260378baa310213",
    "signature": "0xb6cda0d8f1192574068c3bf5c94f84b8a0cf6e3427009d41f627a1b187a859af4791dfe2794f0438227ef560e451c7335ec254d5eeaef7198706ed4de5b9e5e91c",
    "signer": "0x12945cC9FA39eCBdb8edEd0ffeC0233A1b46E062",
    "userId": "27737813"
  }
}